'Glee' 100th Episode: Original Cast Invited, See Who's Coming to the Reunion!

Glee's 100th episode is a huge milestone and is looking promising, with a reunion of the original cast members planned! Find out who will be back for the big episode.
For Glee's 100th episode, something big has to be planned, right?

We're thrilled that show creator Ryan Murphy has invited all of the original cast back to celebrate the milestone.

Ryan tweeted about the upcoming episode, writing: "ALL The Glee Originals received invites today to be in our 100th episode!"

Later, he started revealing who had RSVP'd among the group, which includes Amber Riley, Dianna Agron, Mark Salling, Heather Morris and Harry Shum Jr.

So far, he's revealed that Amber and Mark are in for the 100th episode!

Who knows if there will be scheduling conflicts for the remaining originals, plus Heather has a new baby--can she break away from mommyhood? (We hope so!)

UPDATE: Ryan tweeted that Harry and Heather are also on board, as well as Kristin Chenoweth!

UPDATE 2: Dianna is confirmed to be in the 100th episode!!

Of course, even if they're all on board for the special episode, we'll still be missing Cory Monteith.

The Cory tribute episode, which aired on October 10, was noticeably missing Dianna's character, Quinn.

When rumors swirled that she wasn't invited, she told the Irish Independent: "I've nothing but love for that show and everybody involved in it. It was such a huge part of my life, so I think it's equally hard when I'm not there every day anymore."

We certainly hope she can make it for this milestone episode.

Glee's 100th episode will air March 18 on FOX.

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